| Grade |
Function |
| I |
Normal |
| II |
- Normal at rest.
- Slight
weakness on close inspection.
- Complete eye closure with minimal effort.
- Slight
asymmetry of mouth with movement.
- Good to moderate forehead movement
|
| III |
- Normal at rest.
- Obvious
asymmetry on movement.
- Synkinesis ± hemifacial spasm.
- Complete eye closure with
effort.
- Slight to moderate forehead movement.
- Slight weakness of mouth with
maximal effort
|
| IV |
- Normal at rest.
- Asymmetry
on movement is disfiguring.
- Incomplete eye closure.
- No perceptible forehead
movement.
- Asymmetrical mouth motion with maximal effort
|
| V |
- Asymmetric at rest.
- Barely noticeable movement.
- No forehead movement.
- Incomplete eye closure.
- Slight
mouth movement with effort
|
| VI |
No facial function
perceptible |
Referensi:
Davidson's Principles and Practice of Medicine 20th Edition (Churchill Livingstone) 2007